.content {
    display: flex;
    height: auto;
    /* 主轴默认方向：从左往右 */
    flex-direction: row;
    justify-content: space-around;
    margin-top: 20px;
    margin-left: 20px;
    margin-right: 20px;
}

.tab {
    margin-top: 20px;
    margin-left: 20px;
    width: 80vw;
}

.search {
    width: 50vw;
    display: flex;
    height: auto;
    /* 主轴默认方向：从左往右 */
    flex-direction: row;
    justify-content: space-around;
}

.search_btn {
    margin-left: 20px;
}